AI's memory grab sends DDR5 up 500% — 128GB kit now $3,399
HBM for AI accelerators is starving DRAM supply — kits cost 5-10x more than a year ago, NVMe SSDs are climbing too, and relief isn't due until late 2027.
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128GB of DDR5 now runs $3,399
DDR5 is up ~500% in a year: a 128GB DDR5-6400 kit hit $3,399 (10x its $329 low), and a 32GB kit went $222 → $1,272 (+473%). Even DDR4 is up 120-180%.
HBM is eating the wafers
AI accelerators' HBM needs ~3x the wafer area per GB and earns fabs 3-5x more revenue per wafer, so DDR5 gets deprioritized. HBM is now ~23% of DRAM wafer capacity, up from ~10% in 2023.
It lands on your build budget
A $500 local-AI rig's RAM+storage jumped from ~$90-120 to ~$450-600; a $2,000 workstation's from ~$280 to $850-1,050 — money that now competes directly with your GPU VRAM.
What to buy now
On DDR5? Buy today; Q3 is projected higher and a 64GB DDR5-6000 kit runs ~$630-679. Budget move: a used Ryzen 5000/AM4 box on DDR4 (~$380-420 for CPU+64GB), near-zero inference hit when models fit in VRAM. Grab 2TB Gen4 NVMe now — 2026 NAND is sold out.
Relief isn't due until late 2027
SK hynix warns 2027 will be the worst memory-supply year on record, with demand outstripping output into 2030, and hyperscalers have locked in nearly all 2027 DRAM capacity. Plan builds around scarcity, not a dip.